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Discussion Starter #1
When changing over to the CAI systems and using a tuner, does the problem of the GAS pedal being a delay go away or get any better? Punch the gas and it seems to be a second before the car does anything.
 

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There was a thread up about this just recently. Yes, apparently you can do away with that delay thing by getting certain tune jobs (sorry for my poor vocabulary. I'm not 100% certain what the hell a tune is anyway. Those are things I used to hum. ;) )
 

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Phil Madren said:
When changing over to the CAI systems and using a tuner, does the problem of the GAS pedal being a delay go away or get any better? Punch the gas and it seems to be a second before the car does anything.
Mine has the hesitation. I have read here where those that have it on theirs made it go away....I have the latest download too. Hmmmm, perhaps I could learn something from your feedback here... Good post.
 

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Discussion Starter #4
Thanks for the answer. If I can just find out what that noise is coming from the rear area I will even better
 

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A "tune" will do wonders for your car.... to explain a little bit... Just about everything in your car is computer controlled. Your car's computer is known as the ECU. A "tune" is a replacement program for your car's computer. Just like you can swap out a program on your PC you can change the software that controls the car...

Now, one thing the computer program does is limit the amount of torque especially in 1st gear. So when you step on the gas from a dead stop the computer says "Oh no! There is too much torque developing so I better shut things down...." This results in that terrible hesitation... Now the other term you'll hear is "re-flash". This means putting the "new tune" into the computer... This is down with a unit like the SCT X-Cal2... plugs into the diagnostic port, follow the on screen directions and load the new program "tune" on to your car...

Check out Alternative Auto's write up on the 05 Mustang GT:
http://www.alternativeauto.com/prodserv/05mustang_tune.html
 

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I will say this, I do not think that I now have the hesitation after installing the JTL CAI and the SCT 2 Tuner. If I hit the gas, VROOOOM, I am gone. (Heck, even had to hit the brakes to merge onto the highway today)
 

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Good read, fishinggts. Thanks!

Now that I am more educated, I have a question. It doesn't make sense to purchase a $350 computer that will be used once (I would think most people would just flash their ECU with the new tune and leave it be). Shouldn't there be someone who already has the equipment who would tune my car for a smaller fee?
 
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Phil Madren said:
When changing over to the CAI systems and using a tuner, does the problem of the GAS pedal being a delay go away or get any better? Punch the gas and it seems to be a second before the car does anything.
Phil,
a tune WITH a CAI will give you many things in gain included throttle "snap". More so for the sticks, the auto's I am hearing still have a bit delay remaining. The remedy for that I am reading is the new Throttle Body and even using the TB spacer.

I don't need that stuff but, I hear it helps.
 

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drbino said:
Good read, fishinggts. Thanks!

Now that I am more educated, I have a question. It doesn't make sense to purchase a $350 computer that will be used once (I would think most people would just flash their ECU with the new tune and leave it be). Shouldn't there be someone who already has the equipment who would tune my car for a smaller fee?
Actually having an X-Cal2 around can come in handy... I've gotten quite a bit of use out of it...

1) Using the X-Cal2 and your PC (using the Extreme Tune software, free from SCT) you can make some adjustments yourself: Things that I have done:
A) Adjust for new tire size
B) Adjust for new gear ratio
C) Adjust the transmission shift schedule to my liking and style of driving

2) Datalogging with a laptop. This has been a very useful tool and kind of fun too.

3) When you have to take your car in for service, you simply go to the menu option "Return to Stock"

And if there is something I wanted changed with my tune that I can't do, i simply tell my dealer, he makes the changes and then can e-mail me a new tune...

I can see your point about just using it once to flash the car... but I've got a lot more use out of mine...
 

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Phil Madren said:
Thanks for the answer. If I can just find out what that noise is coming from the rear area I will even better
Hey. Tell me the answer about the rear noise too! It's a low rumble, as if you have snow tires that are low on air, and it goes away in two seconds. And you can't feel it at all.
(posi clutch pack?)
 

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Discussion Starter #11
Thanks FRYGUY, Hey FRY post some pictures of the Trunk Lid mat when you get it ready on here. I know it will look good. Will be getting the JTL next week. The noise I spoke to you about last night on the phone is either Wheel bearings or REAR End Diff.
 

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drbino said:
Good read, fishinggts. Thanks!

Now that I am more educated, I have a question. It doesn't make sense to purchase a $350 computer that will be used once (I would think most people would just flash their ECU with the new tune and leave it be). Shouldn't there be someone who already has the equipment who would tune my car for a smaller fee?
The tuners can only be used with one car. This is because the tuner will "backup" your factory tune to its memory, then you can make changes to your tune and upload it. The whole time, it has a copy of the original configuration. This tuner is now "locked" for your car. You can free the lock by restoring you car to factory tune, then the tuner is free to use with another car.
 

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I bought a Diablo Predator Tuner, with no other modification, the "Delay" went away. The car runs much better and if you should have a problem you will need to upload the original program back into the computer.
 

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I've read about this delay and for the life of me, can't feel it or sense it in my stock GT. Maybe its me, maybe I've driven too many carbureted and large V8's that aren't what you'd call "snappy". But I do take in lots of caffeine and thought I'd see it, but I dont. How much of a delay is there and under what conditions do you observe it?
 

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fishingjts said:
Now, one thing the computer program does is limit the amount of torque especially in 1st gear. So when you step on the gas from a dead stop the computer says "Oh no! There is too much torque developing so I better shut things down...."
does that happen even when the TCS is off?
 

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When I got my SCT XCal2 tuner installed I had to relearn to drive the 05. When I left the tune shop I left a trail of rubber being the throttle responded 100% better. The auto trans now shifts better and holds the 1st, 2nd, and 3rd shifts longer. I have 3 tunes for the car, a 87 and 91 octane street and then a 91 octane race setup. I will be getting lap top soon so that I can adjust the tunes as needed.

Need to add that the tuner can remove the REV and Speed limiters that the factory puts in the stock tune. My limiters have been removed.

:happyhapp
 

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The automatic 05 GTs do have some pretty bad throttle lag in them. That lag can be over one second sometime. I'm used to it now, however, you do have to plan for it.

For example, i'm hesitant to pass a slow car on a two lane highway unless I have tons of room - it just reacts too slow. You have to be aware of it and plan for it, unfortunately.
 

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LordBritish said:
The automatic 05 GTs do have some pretty bad throttle lag in them. That lag can be over one second sometime. I'm used to it now, however, you do have to plan for it.

For example, i'm hesitant to pass a slow car on a two lane highway unless I have tons of room - it just reacts too slow. You have to be aware of it and plan for it, unfortunately.
Try turning off the overdrive... Or better yet, put it in 3rd.
 

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CityDave said:
When I got my SCT XCal2 tuner installed I had to relearn to drive the 05. When I left the tune shop I left a trail of rubber being the throttle responded 100% better. The auto trans now shifts better and holds the 1st, 2nd, and 3rd shifts longer. I have 3 tunes for the car, a 87 and 91 octane street and then a 91 octane race setup. I will be getting lap top soon so that I can adjust the tunes as needed.

Need to add that the tuner can remove the REV and Speed limiters that the factory puts in the stock tune. My limiters have been removed.

:happyhapp
Hey CityDave,
When you say tune shop, do you mean dynoed? I just revised my diablosport predator via their website w/ my friends PC … I only have MACS. The revison seems to have removed the auto throttle lag, but it still shifts to quickly for my liking. I don't know if I trust myself to mess w/ the adjustable parameters and shift points though. Now that your holding shifts longer, are you catching any chirps w/ the shifts? My stock Grand national used screech real nice w/ the auto between shifts. Thanks CityD. :winks
 
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